|
| year | consumption | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | .22 | NA |
| 1987 | .25 | 9.09 % |
| 1988 | .35 | 41.28 % |
| 1989 | .39 | 12.07 % |
| 1990 | .43 | 10.53 % |
| 1991 | .45 | 4.76 % |
| 1992 | .49 | 8.79 % |
| 1993 | .49 | 0.27 % |
| 1994 | .51 | 4.16 % |
| 1995 | .51 | -0.27 % |
| 1996 | .51 | 0.00 % |
| 1997 | .51 | 0.27 % |
| 1998 | .51 | 0.00 % |
| 1999 | .51 | 0.00 % |
| 2000 | .53 | 3.72 % |
| 2001 | .53 | 0.27 % |
| 2002 | .55 | 3.85 % |
| 2003 | .55 | 0.00 % |
| 2004 | 1.22 | 121.61 % |
| 2005 | .84 | -31.48 % |
| 2006 | .63 | -24.39 % |
| 2007 | 1.08 | 70.97 % |
| 2008 | 1.10 | 1.89 % |
| 2009 | 1.16 | 5.56 % |
| 2010 | 1.16 | 0.00 % |
|
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